It's a pun to use it in the "I drive myself" sense in the first sentence and in the "self-driving cars" sense in the second but I thought it was clear. Was it not?

In the future, 'self-driving' will refer to the extravagant act of driving yourself. People born today might never get a driver's license because the insurance for manual driving will be ridiculously expensive. Roads will charge triple for human drivers since we require a larger margin for error compared to autonomous cars.